Dynamic measurement of diffuse reflectivity

ZeRen Li; Xiaofeng Cheng; Yanzhu Zhou; Xianxiang Tan; Ruchao Ma

doi:10.1117/12.273360

28 May 1997 Dynamic measurement of diffuse reflectivity

ZeRen Li, Xiaofeng Cheng, Yanzhu Zhou, Xianxiang Tan, Ruchao Ma

Proceedings Volume 2869, 22nd International Congress on High-Speed Photography and Photonics; (1997) https://doi.org/10.1117/12.273360
Event: 22nd International Congress on High-Speed Photography and Photonics, 1996, Santa Fe, NM, United States

Abstract

For studying the diffuse reflectivity of tungsten target surface, a series of experiments of symmetric flat impact between copper flyer and tungsten target has been done on a two stage light gas gun. Argon ion laser with wavelength 514.5 nm was used as light source to illuminate testing point. The laser light scattered from target was collected by a lens and the light power fore-and-after shock compression was measured. The reflectivity of shock- compressed tungsten target surface could be derived through the power of scattered laser light. In these experiments, the shock pressure in tungsten target was limited from 85 GPa to 250 GPa, five pressure points being chosen. The experimental results show: shock compression makes the reflecting ability of target surface lower, and when the shock pressure is higher than 165 GPa, the reducing speed apparently becomes lower. In addition, the experimental conditions are described in this paper, and the results also are discussed.

Citation Download Citation

ZeRen Li, Xiaofeng Cheng, Yanzhu Zhou, Xianxiang Tan, and Ruchao Ma "Dynamic measurement of diffuse reflectivity", Proc. SPIE 2869, 22nd International Congress on High-Speed Photography and Photonics, (28 May 1997); https://doi.org/10.1117/12.273360

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